Armored inner tube.



H. H. SCHUSTER.

ARMOHED INNER TUB'E. APPucATIoN men lam/5.1911.

1,297,408. Patented Mar. 18,1919.y

HARRY SCHUSTER, OF CHICAGO, ILLINOIS;

ARMORED INNER TUBE.

Specication of Letters Patent.

Application led May 5, 1917. Serial No. 166,535.

T0 allwhom z't may concern:

Be it known that I, HARRY H. SCHUsTER, a citizen of the United States, and a resldent of the city of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Armored Inner Tubes; and I do hereby declare that the following is a full, clear, and exact description of 'the same, reference being had to the accompanying drawings, and to the numerals of reference marked thereon, which form a part of this specification.

Inner tubes for vehicle tires, which are usually constructed of comparatively thin sheet rubber tubing, have always proven unsatisfactory, and have been'the source of considerable trouble and annoyance to vehicle owners, for the reason that thin rubber inner tubes which are very expensive are also weak and liable to tear or blow out at Aany time, the damage resulting to such tubes often being so great that replacement of the Same is necessary.

This invention relates to an improved form of a rubber inner tube for vehicle tires reinforced with knit fabric and metallic armor mesh to afford a comparatively thin elastic casing of great strength and efli' ciency.

struct a reinforced rubber inner tube for use in vehicle tires.

It is also an object of this invention to provide a rubber inner tube having-means embedded therein to strengthen the same.

u It is furthermore an object of this invention rto construct a rubber inner tube for vehicle tires having a knit fabric embedded in Ithe rubber with the ends of the knit fabric overlapping each other and having dis- -posed therebetween a metallic armor mesh to afford an elastic tubing of great strength and' durability. l

It is an important object of this invention to create an improved form of an inner tire tube simple and of effective construction, embracing a metallic reinforcing mesh disposed between the overlapping margins of a loosely woven fabric, which together with said mesh is completely embedded in rubber to produce la reinforced elastic inner tubing for tires.

A, further object of this invention is the construction of an improved form o f an inner tube wherein the outer half thereof is reinforced by a plurality of layers 0f It is an object of this invention to conloosely woven fabric 'between which a layer of metallic armor mesh is disposed, while the inner half of the tube is reinforced by a simple layer of fabric only integrally connected with each of the outer fabric layers to form an elastic inner tube of great durability.

Other and further important objects of this invention wilfl be apparent from the disclosures in the -drawings and specifications. l

The invention (in a preferred form) is illustrated in the drawlngs and hereinafter more fully described.

On the drawings:

Figure l is a side elevational view of an inner tube embodying the principles of this invention.

Fig. 2 an enlarged section taken on line 2-2, of Fig. l.

Fig. 3 is an enlarged top elevational view of a fragment ofan inner tube, with parts broken away to show the construction thereof.

Fig 4 is an enlarged plan view of the knit fabric used in reinforcing the inner tube.

Fig. 5 is an enlarged plan View of the ar mor mesh used in reinforcing the inner tube.

As shown on the drawings: y

The reference numeral l, designates as a Whole the reinforced rubber inner tube embodying the principles of this invention, and having rigidly secured by any suitable means on the inner periphery thereof a radially and inwardly directed valve stem 2. The inner tube, as clearly shown in Figs. 2 and 3, comprises a knit or loosely woven reinforcing fabric 3, which is disposed to eX- tend completely around the tubing with the lend margins 4 and 5, thereof overlapping one another in the outer half of the tubing so that the respective edges 6 and 7, of said margins are positioned dametrically opposite each other on each side of the tubing. To further reinforce the tube l, a single layer of armor mesh 8, is mounted between the overlapping margins 4 and 5, of the knit fabric, with the edges thereof disposed op- 4posite one another and adjacent the fabric edges 6 and 7, as shown in Fig. 2. To complete the tube l, the reinforcing fabric and mesh, arranged as above described. are completely invested with or embedded in rubber 9, which during the rocess of manufacture not only coats the nit fabric and armor mesh but also ills up all of the openings Patented Mar. 18, 1919. v

therein to create a comparatively thin elastic inner tube of uniform thickness, with the l jacentthe position where rubber coatin the single layer of the reinforcin Aknit abric 3, disposed in the inner half o the tube 1, being of a greater thickness as denoted by the numeral 10, where the same abuts the adjacently disposed edges of the knit fabric and armor mesh and then tapers gradually on the outer and inner sides of said single layer portion of the knit fabric to a center line on each side of the tube, ad-

the edges of the armor mesh terminates. An inner tube is thus afforded, of uniform thickness, with the outerhalf reinforced to prevent punctures and blowouts, and with the inner half more iiexible than the outer halfto allow, proper inflation of the inner tube without impairing the cushioning effect of the inner tu e.

From the construction as described it will be' seen that the reinforced inner 4tube 1, is

flexible and elastic, thus aifordin an inner tube of great strength and durabllity, obviating all of the troublesome difiiculties encountered in the use of the ordinary types of rubber inner tubes.

I am aware that different kinds of fabric and armor mesh may be used in place of the kindsshown in Figs. 4 and 5, and also that various other details of construction may be varied through awide range without departing from the principles of this invention a's claimed, and I therefore do not purpose y limiting the patent granted otherwise than necessitated by the prior art.

I claim as my invention:

1. In Van inner tube of the class described, a rubber investment, a' layer of fabric embedded in said rubber investment to reinforce the same, havin the sides overlapped on the tread and a remforcing armor mesh disposed between the overlapped sides on the tread.

2. In an armored inner tube a fabric mesh havin the margins overlapped, a-metallic mesh etween said overlapped margins and a rubber investment for said mesh havin a thin wall in each side of theoVerIappe margins and a wall on each side of the single layer of mesh gradually increasing in thickness from one edge of the overlapped mesh to the other edge.

3. In a reinforced inner tube of the class described, a rubber investment, a unitary fabric reinforcing means embedded therein with the margins thereof overlapping each other to afford two layers of fabric in the outer half of said investment and a singie layer in the inner half thereof, and a single layer of armor mesh disposed between the overlapping margins of said fabric to further reinforce said rubber investment.

4. In an inner tube for Vehicle tires of the class described comprising 'a reinforcing knit fabric disposed completely around the v tube withthe margins thereof overlapping one another in the outer half of the tube and with the edges of said margins disposed dlametrically opposite one another, a reinforcing armor mesh disposed between the overlapping margins of said fabric with the edges thereof disposed adjacent the edges of said fabric margins, and a coatin of rubber completely embedding said fa ric and.

armor mesh to form an elastic inner tube of uniform thickness.

In testimony whereof I have hereunto lsubscribed my namein the presence of two subscribing` witnesses. c

HARRY H. SCHUSTER. l Witnesses:

CHARLES W. Huis, Jr., .EARL M. HARDINE. 

